DSOGaming writes: “During a Q&A session at QuakeCon 2018, id Softwares executive producer Marty Stratton revealed that the demo was running on a very high-end PC. Unfortunately Marty did not reveal the specs of that PC, however weve got at least confirmation of that footage being taken from the PC version.”
Source: N4G PC DOOM Eternal's QuakeCon 2018 demo was running on a very high-end PC, will support the Vulkan API